Rechargeable flameless candle systems and methods

ABSTRACT

According to an embodiment of the present invention, a recharging device includes a recharging port that receives a flameless candle and recharges a battery in the candle. The recharging device includes a first stacking structure that has a top portion and a bottom portion. There is a top stacking contact on the top portion. An electrical power bus is connected with the top stacking contact. The electrical power bus is also configured to provide electrical power to the flameless candle through the recharging port. The top portion of the first stacking structure is configured to mate with a bottom portion of a first stacking structure of another recharging device.

RELATED APPLICATIONS

This application is a continuation of Ser. No. 14/721,383 filed May 26,2015, which is a continuation of Ser. No. 14/323,369 filed on Jul. 3,2014, which is application is a continuation of Ser. No. 14/077,736filed on Nov. 12, 2013 and issued as U.S. Pat. No. 8,878,485 on Nov. 4,2014, which is a continuation of U.S. patent Ser. No. 13/096,424 filedon Apr. 28, 2013, and issued as U.S. Pat. No. 8,579,461, on Nov. 12,2013, and claims priority to U.S. Patent Application No. 61/329,457filed on Apr. 29, 2010, all of which are herein incorporated in theirentireties.

FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

[Not Applicable]

MICROFICHE/COPYRIGHT REFERENCE

[Not Applicable]

BACKGROUND OF THE INVENTION

Generally, the present application relates to rechargeable flamelesscandles. Particularly, the present application relates to therechargeable flameless candles themselves, devices for recharging theflameless candles, and systems that incorporate the rechargeableflameless candles.

Many people find candle light pleasant. The flickering of light andmovement of shadows across a floor or on a nearby wall can be almosthypnotically soothing. As a result, candles have remained popular forgenerations since the invention of more practical electrical lighting,especially for decorative and mood setting purposes. However there arecertain risks associated with open flames, and it may be unwise to leavea lit candle unattended.

Flameless electronic candles have provided an alternative toconventional candles. Flameless candles can simulate the flickeringeffect of a real candle without the danger of an open flame. Some suchtechniques are described in U.S. Pat. No. 6,616,308. Rechargeablebatteries can be used with the flameless candle to facilitateportability of the candle. Of course, rechargeable batteries must berecharged.

Some people or businesses may wish to have many flameless candles. Forexample, a restaurant or caterer may want a flameless candle on eachtable. As another example, a spa may want flameless candles to provide arelaxing level and character of illumination. All of the rechargeableflameless candles must be recharged. There may, however, be a limitedamount of available counter or shelf space to recharge a number offlameless candles. Furthermore, it may be inconvenient to orient aflameless candle in a specific manner when inserting it into arecharger. Moreover, it may be inconvenient to recharge larger candles,such as flameless pillar candles.

BRIEF SUMMARY OF THE INVENTION

According to embodiments of the present invention, a flameless candleincludes a lamp and a bottom portion. The bottom portion has outer andinner recharging contacts. Each of the contacts can form an electricalconnection with an external power source. The flameless candle alsoincludes a rechargeable battery electrically connected with therecharging contacts. The battery provides power to the lamp.

The flameless candle also has outer and inner magnetically responsiveportions. The magnetically responsive portions may be a part of therecharging contacts. The magnetically responsive portions canmagnetically link the flameless candle through the bottom portion with arecharging port. The magnetically responsive portions may also assistthe electrical connection of the recharging contacts with the externalpower source. Additionally, the flameless candle has a plurality of feeton the bottom portion. The feet are arranged between at least a portionof the inner recharging contact and the outer recharging contact. Theplurality of feet can be received by a trench in the recharging port.

The flameless candle may have a switch that interrupts current fromflowing through the lamp. The switch may be actuated through the bottomportion. The flameless candle may also include an electronics portionthat has an illumination circuit and the lamp. The electronics portionis electrically connected with the rechargeable battery. The electronicsportion and the battery may be secured to the bottom portion.

The flameless candle may also have a casing that receives theelectronics portion and the rechargeable battery. The bottom portion maybe fastened with the casing. The casing may include a translucentmaterial that permits the flow of light from the lamp through thecasing. The material may diffuse this light. The casing may have arecessed or protruding top portion. The lamp may be located in theinterior of the casing. The flameless candle may also have risersbetween the bottom portion and the electronics portion. The risers maycontain the rechargeable battery.

According to embodiments of the present invention, a flameless candleincludes a flameless candle insert, a shell, and a door. The flamelesscandle insert has a housing, a lamp, and a rechargeable batteryelectrically connected with the lamp. The shell has an aperture througha bottom portion of the shell that receives the insert. The shell alsohas a stopping portion located above the aperture that limits insertionof the flameless candle insert. The lamp may be located within the shellwhen the flameless candle insert has been inserted. The shell also has amating portion. The shell may have a wax exterior or a top portionincluding a recessed region and a wick.

The flameless candle further includes a door that detachably mates withthe mating portion of the shell and secures the flameless candle insertwithin the shell. The door may rotatably mate with the mating portion.The door may include a disk, a grip protruding from a bottom surface ofthe door, and at least one mating tab. In an embodiment, the matingportion of the shell has a mating groove configured to receive themating tab(s).

According to embodiments of the present invention, a recharging deviceincludes a recharging port that receives a flameless candle andrecharges a battery in the candle. The recharging port may have an innerrecharging contact and an outer recharging contact. Either or both ofthe recharging contacts may include a pogo spring. The recharging portmay have a cylindrical recessed region. The recharging port may alsohave at least one magnet to improve an electrical connection between therecharging port and the flameless candle. The recharging port may permita rotation of the flameless candle across a plurality of rotationalangles and recharge the battery of the flameless candle when theflameless candle is at each of the rotational angles. The rechargingport may be configured such that the flameless candle can be droppedinto the recharging port. In an embodiment, the device has two or morerecharging ports. Each of these ports is electrically connected with anelectrical power bus.

A recharging controller may separately control the current supplied toeach of the recharging ports. The device may also include visualindicator(s) corresponding to the recharging port(s). The indicators mayindicate the state of recharging of the flameless candle. In anembodiment, the recharging ports are arranged within a tray. The traymay have at least one handle, such as a left handle and/or a righthandle on the lateral portions of the tray.

The device includes a first stacking structure that has a top portionand a bottom portion. There is a top stacking contact on the topportion. The electrical power bus is connected with the top stackingcontact. The top portion of the first stacking structure is configuredto mate with a bottom portion of another first stacking structure. In anembodiment, the bottom portion of the first stacking structure has abottom stacking contact electrically connected with the electrical powerbus. The bottom stacking contact may have a pogo spring. The device mayalso have a second stacking structure having a top portion without anelectrical contact. The second stacking structure is configured to matewith a bottom portion of another second stacking structure. In anembodiment, the device has two first stacking structures and two secondstacking structures.

According to embodiments of the present invention, a method forrecharging a flameless candle includes stacking a first rechargingdevice with a second recharging device. The flameless candle is droppedinto a recharging port in the first recharging device. The method alsoincludes the step of unstacking the first recharging device from thesecond recharging device. In an embodiment, the method includes the stepof recharging a battery of the flameless candle through the rechargingport. The method may also include the step of dropping a plurality offlameless candles into a corresponding plurality of recharging ports inthe first recharging device. In an embodiment, a visual indicatorindicates a recharging state of the battery of the flameless candle. Inan embodiment, the flameless candle is sequentially dropped into therecharging port a plurality of different rotational angles of theflameless candle.

BRIEF DESCRIPTION OF SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 shows a flameless candle core, according to an embodiment of thepresent invention.

FIG. 2 shows a bottom view of a bottom portion of a flameless candlecore, according to an embodiment of the present invention.

FIG. 3 shows a flameless candle, according to an embodiment of thepresent invention.

FIG. 4 shows a flameless candle, according to an embodiment of thepresent invention.

FIG. 5 shows a flameless candle, according to an embodiment of thepresent invention.

FIGS. 6A and 6B show a recharging device, according to an embodiment ofthe present invention.

FIGS. 7A and 7B show a recharging port, according to an embodiment ofthe present invention.

FIGS. 8A-8E show a flameless candle system 800, according to anembodiment of the present invention.

FIG. 9 shows a flowchart for a method of recharging a flameless candle,according to an embodiment of the present invention.

The foregoing summary, as well as the following detailed description ofcertain embodiments of the present invention, will be better understoodwhen read in conjunction with the appended drawings. For the purposes ofillustration, certain embodiments are shown in the drawings. It shouldbe understood, however, that the claims are not limited to thearrangements and instrumentality shown in the attached drawings.Furthermore, the appearance shown in the drawings is one of manyornamental appearances that can be employed to achieve the statedfunctions of the system.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 shows a flameless candle core 100 including a lamp 110, a bottomportion 120, a rechargeable battery 130, an electronics portion 140, andone or more risers 150, in accordance with an embodiment of the presentinvention. The flameless candle insert 100 may also include a switch(not shown).

The rechargeable battery 130 may be capable of powering the lamp 110 anda circuit on the electronics portion 140. The rechargeable battery 130may include one or more battery cells. The rechargeable battery 130 maybe nickel cadmium, nickel metal hydride, lithium ion, and/or other typesof rechargeable batteries. In an embodiment of the present invention,the rechargeable battery 130 includes two battery cells in series.

The lamp 110 may be one or more light emitting diodes (“LED”) orincandescent bulbs. The rechargeable battery 130 may be electricallyconnected with the lamp 110 or the electronics portion 140, and may beconfigured to provide electrical power to the lamp 110 (either directlyor through the electronics portion 140). A switch may be configured tointerrupt a flow of current through the lamp 110 so that therechargeable battery 130 does not provide electrical power to the lamp110. For example, the switch could cause a circuit to open orclose—either by directly switching the flow of current or byimplementing the switch to toggle the state of an input to a circuit orprocessor that controls the flow of current through the lamp. The switchmay toggle or otherwise adjust other aspects, such as the level of lightintensity or the type of flickering emitted from the lamp 110.

The electronics portion 140 may include an illumination circuit designedto illuminate the lamp 110. For example, an illumination circuit couldbe designed to vary the current flowing through the lamp 110 to causethe lamp 110 to approximate the behavior of a real candle flame. Anillumination circuit could implement one or more oscillator circuitsand/or a microprocessor. As an example, the illumination circuit couldbe two or more oscillator circuits, each of which are capable ofoperating at different frequencies and/or phases. In this example, thesum of the outputs of the oscillation circuits could be employed tovariably control the current flowing through the lamp 110, therebycreating a flickering illusion of a real candle flame. As anotherexample, the illumination circuit may be a microprocessor executing oneor more algorithms.

The lamp 110 may be secured to the electronics portion 140. For example,leads from the lamp 110 may be secured to the electronics portion 140through soldering, bending, or crimping. The height of the lamp 110 fromthe electronics portion 140 may be adjusted by shortening or lengtheningthe leads.

One or more risers 150 may extend from the bottom portion 120 to supportthe electronics portion 140 and/or other portions of the flamelesscandle insert 100. For example, the riser(s) 150 may be interposedbetween the bottom portion 120 and the electronics portion 140. Therisers 150 may also be configured to contain the rechargeable battery130.

The electronics portion 140 or the rechargeable battery 130 may besecured to the bottom portion 120. For example, the bottom portion 120may have tabs extending upwards that mechanically secure to theelectronics portion 140 or the rechargeable battery 130. The tabs may bemechanically secured by soldering the tabs around or to the electronicsportion 140 or the rechargeable battery 130. The tabs may also besecured by bending or crimping the tabs around or to the electronicsportion 140 or the rechargeable battery 130. Mechanical fasteners andother securing techniques may also be used. The tabs may be used tosimultaneously create electrical connections and mechanically secure thebottom portion 120 to the electronics portion 140 or the rechargeablebattery 130.

The flameless candle core 100 may also include a magnetically responsivematerial. The magnetically responsive material may be a separate portionof the flameless candle core or may be embedded or integrated in anotherportion. For example, the magnetically responsive material may beembedded in the bottom portion 120, as further described below. Themagnetically responsive material may cause the flameless candle core 100to be magnetically attracted to another object (or portion of anobject), such as a recharging port as further described below.

FIG. 2 shows a bottom view of a bottom portion 200 of a flameless candleinsert including an outer recharging contact 210, an inner rechargingcontact 220, and a switch actuator 230, in accordance with an embodimentof the present invention. The bottom portion 200 may be similar tobottom portion 120.

The outer and inner recharging contacts 210, 220 may be electricallyconnected with a rechargeable battery, such as rechargeable battery 130.The outer and inner recharging contacts 210, 220 may also be configuredto form an electrical connection with an external power source. Forexample, the outer and inner recharging contacts 210, 220 could beconfigured to connect to a direct current (“DC”) power supply to chargea rechargeable battery, such as rechargeable battery 130. The outer andinner recharging contacts 210, 220 may include an electricallyconductive material. The outer and inner recharging contacts 210, 220may also include a magnetically responsive material, such as a materialattracted to a magnet. The magnetically responsive material may beconfigured to assist an electrical connection of the outer and innerrecharging contacts 210, 220 to the external power source.

The outer recharging contact 210 may be substantially in the form of around shape. For example, the outer recharging contact 210 could form aring shape. The inner recharging contact 220 may be substantiallysurrounded by the outer recharging contact 210. The inner rechargingcontact 220 could form an “S”-type or “backwards S”-type shape. Aportion of the inner recharging contact 220 may be located at the centerof the bottom portion 200. The outer recharging contact 210 and/or innerrecharging contact 220 may have one or more tabs that extend through thebottom portion 200. The portion of the tabs that extend through thebottom portion 200 may be the portions of the contact(s) that connectwith electronic components in a flameless candle insert, such ascircuits on the electronics portion 140, the lamp 110 and therechargeable battery 130.

The switch actuator 230 may be configured to actuate a switch thatinterrupts the current flowing through the lamp. The switch actuator maybe part of a switch that is a slide switch, push button switch, etcetera. The switch actuator 230 may also be part of a switch thattoggles or otherwise adjusts other aspects of the flameless candle, suchas the level of light intensity and the type of flickering emitted bythe lamp 110. A portion of the switch actuator 230 and/or the switch maytraverse through a riser and up to an electronics portion.

Also shown as part of the bottom portion are three feet (each appearingas two small concentric circles) in a triangular configuration. The feetmay protrude in a downward direction such that the outer and innerrecharging contacts will not lie directly on a resting surface. Becausethe flameless candle has recharging contacts on the bottom portion, itmay be advantageous to keep the contacts elevated above the restingsurface which may have a potentially damaging substance, such as liquid.

FIGS. 3, 4, and 5 illustrate different flameless candles 300, 400, and500, according to embodiments of the present invention. Each of theflameless candles 300, 400, and 500 are depicted with correspondingflameless candle cores 310, 410, and 510 and casings 320, 420, and 520.The casings 320, 420, and 520 may have interior regions which aredesigned to encase the flameless candle cores 310, 410, and 510. Theflameless candles 300, 400, 500 may be substantially cylindrical, andmay be rotatable around the cylindrical axes at various rotationalangles.

FIG. 3 shows a flameless tea light 300, according to an embodiment ofthe present invention. The flameless tea light 300 includes a flamelesscandle core 310 (similar to flameless candle core 100), a casing portion320, and a protruding top portion 330. The casing portion 320 may havean interior region configured to receive the flameless candle core 310.The casing portion 320 and flameless candle core 310 may connect byusing friction, fasteners (e.g., screws or rivets), epoxy, and/or thelike. The casing portion 320 and the flameless candle core 310 may bepermanently connected or removably connected (e.g., connected throughremovable screws). The casing portion 320 may encase the entireflameless candle core 310, or only a portion thereof.

The flameless tea light 300 may also include a protruding top portion330 which extends above the casing portion 320. The protruding topportion 330 may have a flame shape, such as the one shown in FIG. 3.Other shapes are possible too, such as a half-sphere, a cylinder, acylinder with a rounded top, and/or the like. The casing portion 320and/or the protruding top portion 330 may include a transparent ortranslucent material (e.g., silicon) that facilitates presenting anillusion of a real flame candle. A lamp in the flameless candle core 310may extend fully or partially into the protruding top portion 330, ormaybe located below the protruding top portion 330. The lamp in theflameless candle core 310 may be located such that light is emittedthrough the protruding top portion 330. The protruding top portion 330may be an integral part of the casing 320 or may be a separate pieceused together with 320 to form a casing. The protruding top portion 330may also be an ornament on the casing 320. The casing portion 320 mayalso include a recessed portion at the top to simulate a used candle.

FIG. 4 shows a flameless votive candle 400, according to an embodimentof the present invention. In many respects, the flameless votive candle400 is similar to the flameless tea light 300. The flameless votivecandle 400 includes a flameless candle insert 410 (similar to flamelesscandle insert 100), a casing portion 420, and a wick portion 430. Thecasing portion 420 may be configured to receive the flameless candleinsert 410. The casing portion 420 and flameless candle insert 410 mayconnect by using friction, fasteners (e.g., screws or rivets), epoxy,and/or the like. The casing portion 420 and the flameless candle insert410 may be permanently connected or removably connected (e.g., connectedthrough removable screws). The casing portion 420 may encase the entireflameless candle insert 410, or only a portion thereof. The flamelessvotive candle 400 may also include a wick portion 430 which extendsthrough or above the casing portion 420. The wick portion 430 maysimulate the appearance of a wick. For example, the wick portion couldbe black and could be a stubby cylinder. Other shapes are possible too,such as a longer wick, a curved wick, and/or the like. The casingportion 420 and/or the wick portion 430 may include a translucentmaterial that facilitates presenting an illusion of a real flame candle.The casing portion 420 may include a recessed portion at the top tosimulate a candle that has been used.

The flameless candle 400 is shown having a recessed portion 440 on thetop of the casing 420, as well as a wick 430. The wick 430 may be anintegral part of casing 420, or may be a separate piece which extendsthrough the top of the casing 420 or is an ornamental attachment to thecasing 420.

The flameless candle 500 is similar in many respects to flameless candle400. The flameless candle 500, however, is shown as being taller thanthe flameless candle 400. Furthermore the lamp in the flameless candlecore 510 has been located in a higher position so as to locate the lightsource closer to the wick 530.

FIGS. 6A and 6B show a recharging device 600, in accordance with anembodiment of the present invention. The recharging device 600 may becapable of recharging batteries in flameless candles. The rechargingdevice 600 may include a recharging port 622. As shown in FIG. 6A, therecharging device 600 has twelve recharging ports 622 in a 3×4 array,and each of the recharging ports 622 is configured to receive aflameless candle and recharge a battery of the flameless candle.

The recharging device 600 may also include an electrical power bus thatis electrically connected with one or more recharging ports 622. Therecharging ports 622 may be connected in parallel across the electricalpower bus. The electrical power bus may be configured to be electricallyconnected with a power supply, such as a converter (AC/DC, DC/DC, AC/AC,etc.) or one or more batteries. The electrical power bus may beelectrically connected with an input jack on the recharging device 600.

Turning for a moment to FIGS. 7A and 7B, a recharging port 700 (similarto recharging port 622) is shown in accordance with an embodiment of thepresent invention. The recharging port 700 may include an innerrecharging contact 710, an outer recharging contact 720, a first magnet730, a second magnet 740, a trench 750, and a recessed region 760. Therecharging port 700 may be configured to receive a flameless candle andrecharge a battery of the flameless candle through the inner rechargingcontact 710 and the outer recharging contact 720. The recharging port700 may be configured to permit a rotation of the flameless candleacross a plurality of rotational angles. This may permit recharging ofthe flameless candle in a variety of positions, rather than requiringthe flameless candle and the recharging port to be keyed to permitrecharging. For example, the recessed region 760 may be substantiallycylindrical and sized corresponding to the size of the flameless candle.Once in the recharging port, the flameless candle may be rotated andstill be charged in various rotational positions.

A flameless candle may be dropped into the recharging port 700. Therecharging port 700 may be configured such that a bottom portion of theflameless candle (e.g., bottom portion 200) may mechanically andelectrically contact the inner recharging contact 710 and the outerrecharging contact 720. One or more of the recharging contacts 710, 720may include a spring, such as a pogo spring, to facilitate mechanicaland electrical contacts.

The mechanical and electrical contact with the recharging contacts 710,720 may be facilitated by gravity or magnetism. To this end one or moremagnets, such as first magnet 730 and second magnet 740, may beconfigured to magnetically attract the flameless candle to therecharging port 700. As discussed above, the bottom portion of theflameless candle may have electrical contacts that are electricallyconnected with a rechargeable battery. The bottom portion of theflameless candle may also include a magnetically responsive material,such as a material attracted to a magnet. For example, the contacts onthe bottom portion of the flameless candle can include a magneticallyresponsive material. By using magnetism, the mechanical (and electrical)connection between the contacts on the bottom portion of the flamelesscandle and the recharging contacts may be facilitated or improved. Thereception of the flameless candle may also be facilitated by the trench750, which may be configured to accommodate feet on the bottom portionof the flameless candle. For example, the feet may protrude in adownward direction and may be received by the trench. If the feet areconfigured to elevate the contacts of the flameless candle above aresting surface, the trench 750 can be configured to receive the feetand allow the electrical contacts to rest directly on the rechargingcontacts 710, 720.

Turning back to FIG. 6, the recharging device 600 may be stackable withanother recharging device. Stacking of recharging devices 600 may befacilitated by stacking structures, such as a first stacking structure602 and a second stacking structure 612. The stacking structures mayfacilitate vertical stacking or removable stacking. Stacking mayfacilitate the storage and recharging of many flameless candles over arelatively small footprint.

The first stacking structure 602 may include a top portion 604, a topelectrical contact 608, a bottom portion 606, and a bottom electricalcontact 610. The top portion 604 of the first stacking structure 602 maybe configured to removably mate with a bottom portion of another firststacking structure. Similarly, the bottom portion 606 of the firststacking structure 602 may be configured to removably mate with a topportion of another first stacking structure. Such stacking techniquescan be repeated, such that three or more recharging devices can bestacked. For example, the top portion 604 may be configured as a maleportion and may be received by a bottom portion configured as a femaleportion.

The electrical power bus of the device 600 may be electrically connectedwith the top electrical contact 608 or the bottom electrical contact610. When devices are stacked, the top and bottom electrical contactsmay be configured in such a way to electrically connect the electricalpower busses of the stacked devices. The top electrical contact 608 maybe configured to electrically contact a bottom electrical contact ofanother device. Similarly, the bottom electrical contact 610 may beconfigured to electrically contact a top electrical contact of anotherdevice. One or both of the contacts may include a spring, such as a pogospring. The spring may facilitate mechanical and electrical contactbetween the top and bottom electrical contacts. For example, the bottomelectrical contact 610 may have a pogo spring that facilitates contactwith a top electrical contact of another device when the bottom portion606 is mated to a top portion of another device. By connecting theelectrical power busses of different devices, it may be possible torecharge flameless candles at different stacking levels with one powersupply.

The second stacking structure 612 may be similar to the first stackingstructure 602 in many respects. According to an embodiment, the secondstacking structure may be used to mechanically facilitate the stackingof devices. The second stacking structure 610 may include a top portion614, a bottom portion 617, and top and bottom mating portions 615 and616. The top mating portion 615 may be a female portion, and may beconfigured to removably mate with a bottom male mating portion ofanother device, or vice versa.

In an embodiment the device has two first stacking structures 602 andtwo second stacking structures 612. In an embodiment, the first stackingstructures 602 facilitate mechanical stacking and electrical contactbetween the electrical power busses of the devices, whereas the secondstacking structures 612 facilitate mechanical stacking but notelectrical contact. In an embodiment, the device 600 is rectangular andhas two first stacking structures 602 at or near its front corners andtwo second stacking structures 612 at or near its rear corners.

As mentioned above, there may be one or more recharging ports 622electrically connected with the electrical power bus of the device 600.There may also be corresponding visual indicator(s) 624 to indicate acharging state of a flameless candle in a recharging port 622. Suchvisual indicators 624 may be configured to indicate a recharging stateof a flameless candle in corresponding recharging ports 622. The visualindicators 624 may, for example, be laid out to correspond to thedistribution of recharging ports 622. As shown in FIG. 6, there aretwelve recharging ports 622 in a 3×4 matrix and twelve correspondingvisual indicators 624 in a corresponding 3×4 matrix.

A visual indicator 624 may include a light source such as a lightemitting diode (“LED”). The nature of the illumination of the visualindicator 624 may change according to a recharging state of a flamelesscandle in a recharging port 622. For example, if a flameless candle isrecharging, a corresponding visual indicator 624 may be illuminated, andif the flameless candle is fully charged, the visual indicator 624 maynot be illuminated (or vice versa). The visual indicator 624 mayindicate the state of the flameless candle by changing colors, pulsing,dimming, or other techniques. The visual indicator 624 may also indicatethe presence of a flameless candle in a recharging port 622, or otheraspects of charging such as fast charging, cycled charging, or tricklecharging.

In order to control recharging through each of a plurality of rechargingports 622, a recharging controller may be provided. In an embodiment, arecharging controller may be configured to separately control currentsupplied to each of the plurality of recharging ports. Such a rechargingcontroller may independently track the charging state of a flamelesscandle. For example, the recharging controller may measure the currentflowing through each flameless candle or the voltage across the batteryof each flameless candle. The recharging controller may control theillumination of the visual indicators 624 corresponding to the differentcharging states of the flameless candles in the recharging ports. In anembodiment, the recharging controller is an application specificintegrated chip (“ASIC”).

The device 600 may also have a tray 618. The tray 618 may be arranged toaccommodate a plurality of recharging ports 622 in a horizontal plane,generally. The tray may include one or more handles 620. For example,the tray 618 may have left and right handles 620 on the lateral portionsof the tray 618. The handle(s) 618 may be configured to facilitatemoving or stacking the device 600.

As an illustrative example, a tray may be used in the following manner.A restaurant has forty-eight tables and each table should be illuminatedwith a flameless electronic candle. In this situation, four devices 600,each having twelve recharging ports 622, can be used. The devices 600are stacked on top of each other. Specifically, the top portions 608 oftwo first stacking structures 602 are mated to the bottom portions 606of two first stacking structures 602 in another device 600. When thefirst stacking structures 602 are mated, a top electrical contact 608(which includes a horizontal pad) makes a mechanical and electricalcontact with a bottom electrical contact 610 (which includes avertically oriented pogo spring). The combination of the mechanicalmating between the top and bottom portions 604, 606 and the pogo springforce facilitates the mechanical and electrical contact between the topand bottom electrical contacts 608, 610. In addition to the firststacking structures 602, the top portions 614 of two second stackingstructures 612 of the device 600 are mated to the bottom portions 617 oftwo second stacking structures 612 of another device 600.

Similarly, the top portions 614 of two second stacking structures 612are mated to the bottom portions of two second stacking structures 602in another device 600. To assist mating, a female portion 615 isconfigured to receive a male portion 616. For each of the stackingstructures, the mating is facilitated by friction between the top andbottom portions of the stacking structures.

In each device 600, twelve uncharged flameless candles are dropped intothe recharging ports 622. Because of the nature of the recharging ports622, the flameless candles can be dropped in at a variety of rotationalangles. Therefore, it is not necessary to put a flameless candle into arecharging port 622 with a specific orientation. Furthermore, once aflameless candle is in a recharging port 622, it can be freely rotatedand still be recharged. There is no “keying” required between theflameless candle and the recharging port 622 to effect recharging of theflameless candle.

After stacking, the electrical power busses of the devices 600 areelectrically connected. One power supply is then connected with one ofthe devices 600. Because the electrical power busses are electricallyconnected, the one power supply can then be used to supply power to eachof the electrical power busses. Because initially the batteries of theflameless candles are not charged, the corresponding indicators 624 areilluminated. The batteries of the forty-eight flameless candles are thencharged. As each battery becomes charged, a corresponding indicator 624turns off, thus indicating a charged state.

After the batteries of the flameless candles are recharged, the devices600 are unstacked—i.e., removed from each other. Each device 600 is thencarried to distribute twelve flameless candles to the tables. Afterdistributing all of the flameless candles of the four devices, eachtable now has a flameless candle.

FIGS. 8A, 8B, 8C, 8D, and 8E show a flameless candle system 800,according to an embodiment of the present invention. The flamelesscandle system 800 is shown to include a flameless candle insert 810,shell 820, and door 830, according to an embodiment of the presentinvention.

The flameless candle insert 810 may be similar to one or more of theflameless candles described above. The flameless candle insert 810 mayhave a housing, a lamp, and a rechargeable battery electricallyconnected with the lamp. The flameless candle insert 810 may have abottom portion with contacts, and may be rechargeable through a device,such as device 600.

The shell 820 may have a wax, wax-like, or waxy-appearing exterior. Theshell 820 may include a bottom portion having an aperture. The aperturemay be configured to receive the flameless candle insert 810. The shell820 may also include a stopping portion 850. The stopping portion 850may limit the insertion of the flameless candle insert 810. Wheninserted, the lamp of the flameless candle insert 810 may be inside theshell 820, or may protrude through the top portion of the shell 820. Thestopping portion 850 may be located at a distance from the aperture sothat the flameless candle insert snugly fits within the shell 820. Theshell 820 may also include a mating portion 860. The mating portion maybe configured to mate with the door 830, as further described below. Theshell 820 may also include a top portion having a recessed region 840and a wick 845. When inserted, the lamp of the flameless candle insert810 may be located below the wick 845. When illuminated, the flamelesscandle system 800 may have the appearance of a lit candle, such as apillar candle.

The door 830 may include a disk 870, a grip 880, and one or more matingtabs 890. The mating tab(s) 890 may be configured to detachably matewith the mating portion 860 of the shell 820. After the flameless candleinsert 810 is inserted into the shell 820, the door 830 may detachablymate with the shell 820 to secure the flameless candle insert 810. Thedoor 830 may be configured to rotatably mate with the shell 820. Thegrip 880 may protrude from a bottom surface of the door 830, and mayfacilitate rotatable mating. In an embodiment, the mating portion 860may include a groove to receive or accommodate the mating tab(s) 890.The groove may travel a circumference or a portion thereof of the matingportion 860.

FIG. 9 shows a flowchart 900 for a method of recharging a flamelesscandle, according to an embodiment of the present invention. The stepsshown in the flowchart 900 may be performable in conjunction withdevices, such as flameless candles 100, 200, 300, 400, and 500. Thesteps may also be performable in conjunction with devices such asrecharging device 600. Furthermore, the steps may be performable in adifferent order, or some steps may be omitted.

At step 910, a first recharging device is stacked with a secondrecharging device. The first and second recharging devices may besimilar to recharging device 600. The first recharging device may bestacked on top of the second recharging device, or vice versa.

At step 920, at least one flameless candle is dropped into acorresponding recharging port in the first recharging device. Theflameless candle may be similar to one or more of flameless candles 100,200, 300, 400, and 500. A plurality of flameless candles may be droppedinto a plurality of corresponding recharging ports in the firstrecharging device. Upon successive or sequential drops, the flamelesscandle may be dropped at different rotational angles. The firstrecharging device may still be able to recharge the flameless candle,regardless of the rotational angle of the flameless candle.

At step 930, one or more rechargeable batteries in the flamelesscandle(s) are recharged through the recharging port. At step 940unstacking the first recharging device from the second rechargingdevice. At step 950 a visual indicator indicates a recharging state ofthe battery of the flameless candle. More than one visual indicator maybe employed if multiple flameless candles are used. The visual indicatormay be similar to visual indicator 624 and the associated techniques.

While the invention has been described with reference to certainembodiments, it will be understood by those skilled in the art thatvarious changes may be made and equivalents may be substituted withoutdeparting from the scope of the invention. In addition, manymodifications may be made to adapt a particular situation or material tothe teachings of the invention without departing from its scope.Therefore, it is intended that the invention not be limited to theparticular embodiment disclosed, but that the invention will include allembodiments falling within the scope of the appended claims.

The invention claimed is:
 1. A recharging device for recharging at leastone a rechargeable flameless candle, wherein the recharging devicecomprises: a tray arranged in a substantially horizontal plane; arecharging port located in the tray, wherein the recharging port isconfigured to receive a rechargeable flameless candle; a first stackingportion including an upper portion and a first electrical contact on theupper portion; an electrical power bus electrically connected to thefirst electrical contact and configured to provide electrical power tothe rechargeable flameless candle through the recharging port; andwherein the upper portion of the first stacking portion is configured toengage with another recharging device positioned above the tray suchthat the first electrical contact makes an electrical connection with anelectrical power bus of the another recharging device.
 2. The rechargingdevice of claim 1, wherein the recharging port comprises a cavity. 3.The recharging device of claim 2, wherein the cavity comprises acircular wall.
 4. The recharging device of claim 2, wherein therecharging port comprises a recharging contact configured to contact aportion of the rechargeable flameless candle.
 5. The recharging deviceof claim 4, wherein the recharging contact is positioned at leastpartially within the cavity.
 6. The recharging device of claim 4,wherein the recharging contact is positioned at least partially outsidethe cavity.
 7. The recharging device of claim 1, further comprising aplurality of recharging ports in the tray, and wherein the electricalpower bus is further configured to provide electrical power to aplurality of rechargeable flameless candles in the plurality ofrecharging ports.
 8. The recharging device of claim 7, furthercomprising a plurality of visual indicators, wherein each of theplurality of visual indicators corresponds to one of the plurality ofrecharging ports and is configured to indicate a recharging state of arespective rechargeable flameless candle.
 9. The recharging device ofclaim 1, wherein the recharging port is configured to permit a rotationof the rechargeable flameless candle across a plurality of rotationalangles and recharge the battery of the rechargeable flameless candlewhen the rechargeable flameless candle is at any one of the rotationalangles.
 10. The recharging device of claim 1, further comprising asecond electrical contact in a lower region of the recharging device,wherein the second electrical contact is electrically connected with theelectrical power bus.
 11. The recharging device of claim 1, furthercomprising a second stacking portion comprising an upper portion withoutan electrical contact, wherein the upper portion of the second stackingportion is configured to engage with the another recharging device. 12.The recharging device of claim 7, wherein the plurality of rechargingports are arranged within a tray.
 13. The recharging device of claim 12,wherein the tray comprises at least one handle.
 14. The rechargingdevice of claim 13, wherein the at least one handle comprises a “U”shape.
 15. The recharging device of claim 13, wherein the tray comprisesa left lateral portion including a left handle and a right lateralportion including a right handle.
 16. The recharging device of claim 11,further comprising two first stacking portions and two second stackingportions.
 17. A recharging device for recharging rechargeable flamelesscandles, wherein the recharging device comprises: a plurality ofrecharging ports, wherein: each of the plurality of recharging ports isconfigured to receive a rechargeable flameless candle; and the pluralityof recharging ports are distributed in substantially a horizontal plane;a first stacking portion; a first electrical contact on an upper portionof the first stacking portion; a second electrical contact on a lowerportion of the recharging device; and an electrical power buselectrically connected to the first electrical contact and the secondelectrical contact, wherein the electrical power bus is configured toprovide electrical power to a plurality of rechargeable flamelesscandles through the plurality recharging ports, wherein the upperportion of the first stacking portion is configured to engage withanother recharging device positioned substantially above the rechargingdevice, such that the first electrical contact will be electricallyconnected to an electrical contact on a lower portion of the anotherrecharging device.
 18. The recharging device of claim 17, furthercomprising: a second stacking portion; a third electrical contact on anupper portion of the second stacking portion; a fourth electricalcontact on the lower portion of the recharging device; wherein theelectrical power bus is electrically connected to the third electricalcontact and the fourth electrical contact; and wherein the upper portionof the second stacking portion is configured to engage with the anotherrecharging device such that the third electrical contact will beelectrically connected to another electrical contact on the lowerportion of the another recharging device.
 19. The recharging device ofclaim 17, wherein each of the recharging ports comprises a cavity. 20.The recharging device of claim 19, wherein the cavity comprises acircular wall.
 21. The recharging device of claim 17, further comprisinga plurality of visual indicators, each of the plurality of visualindicators corresponding to one of a plurality of recharging ports andconfigured to indicate a recharging state of a rechargeable flamelesscandle.
 22. The recharging device of claim 17, wherein each of therecharging ports is configured to permit a rotation of a correspondingrechargeable flameless candle across a plurality of rotational anglesand recharge the corresponding rechargeable flameless candle when thecorresponding rechargeable flameless candle is at any one of therotational angles.
 23. The recharging device of claim 17, furthercomprising a third stacking portion comprising an upper portion withoutan electrical contact, wherein the upper portion of the third stackingportion is configured to engage with the another recharging device. 24.A system for recharging rechargeable flameless candles, wherein thesystem comprises: a plurality of rechargeable flameless candles; and arecharging device including: a plurality of recharging ports, whereineach of the plurality of recharging ports is configured to receive arechargeable flameless candle, and wherein the plurality of rechargingports are distributed in substantially a horizontal plane; a firststacking portion; a first electrical contact on an upper portion of thefirst stacking portion; a second electrical contact on a lower portionof the recharging device; and an electrical power bus electricallyconnected to the first electrical contact and the second electricalcontact, wherein the electrical power bus is configured to provideelectrical power to the plurality of rechargeable flameless candlesthrough the plurality of recharging ports, wherein the upper portion ofthe first stacking portion is configured to engage with anotherrecharging device positioned substantially above the recharging device,such that the first electrical contact will be electrically connected toan electrical contact on a lower portion of the another rechargingdevice.
 25. The system of claim 24, wherein the recharging devicefurther comprises: a second stacking portion; a third electrical contacton an upper portion of the second stacking portion; a fourth electricalcontact on the lower portion of the recharging device; wherein theelectrical power bus is electrically connected to the third electricalcontact and the fourth electrical contact; and wherein the upper portionof the second stacking portion is configured to engage with the anotherrecharging device such that the third electrical contact will beelectrically connected to another electrical contact on the lowerportion of the another recharging device.
 26. The system of claim 24,wherein each of the recharging ports comprises a cavity.
 27. The systemof claim 26, wherein the cavity comprises a circular wall.
 28. Thesystem of claim 24, wherein the recharging device further comprises aplurality of visual indicators, each of the plurality of visualindicators corresponding to one of a plurality of recharging ports andconfigured to indicate a recharging state of a rechargeable flamelesscandle.
 29. The system of claim 24, wherein each of the recharging portsis configured to permit a rotation of a corresponding rechargeableflameless candle across a plurality of rotational angles and rechargethe corresponding rechargeable flameless candle when the correspondingrechargeable flameless candle is at each of the rotational angles. 30.The system of claim 24, wherein: the recharging device further comprisesa third stacking portion including an upper portion without anelectrical contact; and the upper portion of the third stacking portionis configured to engage with the another recharging device.